I can play my Toshiba Vcr through the coax and a/v connections on my new tv.
The vcr tapes do not have a very sharp picture.
Would a RCA to HDMI upscale converter improve the sharpness of my old vcr tapes?
Amazon has quite a few of them for sale.https://www.amazon.com/Svideo-Conver...a-569349346534

A few high-end VCRs had digital noise reduction systems that smooth out the noise enough that rather than a fuzzy blurry picture you get just a somewhat blurry picture...CRT is the way to go for tape. Also, NTSC is extremely hard to make look good on a screen over 36"